Publication: Heat-enhancing aggregation of gold nanoparticles combined with loop-mediated isothermal amplification (HAG-LAMP) for Plasmodium falciparum detection
Issued Date
2021-09-05
Resource Type
ISSN
1873264X
07317085
07317085
Other identifier(s)
2-s2.0-85110385257
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Mahidol University
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SCOPUS
Bibliographic Citation
Journal of Pharmaceutical and Biomedical Analysis. Vol.203, (2021)
Suggested Citation
Patcharapan Suwannin, Duangporn Polpanich, Saovanee Leelayoova, Mathirut Mungthin, Pramuan Tangboriboonrat, Abdelhamid Elaissari, Kulachart Jangpatarapongsa, Toon Ruang-areerate, Tienrat Tangchaikeeree Heat-enhancing aggregation of gold nanoparticles combined with loop-mediated isothermal amplification (HAG-LAMP) for Plasmodium falciparum detection. Journal of Pharmaceutical and Biomedical Analysis. Vol.203, (2021). doi:10.1016/j.jpba.2021.114178 Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/76029
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Title
Heat-enhancing aggregation of gold nanoparticles combined with loop-mediated isothermal amplification (HAG-LAMP) for Plasmodium falciparum detection
Abstract
Malaria infection represents a major public health and economic issue that leads to morbidity and mortality globally. A highly effective and uncomplicated detection tool is required for malaria control in geographical hotspots of transmission. We developed a simple and more sensitive novel approach for the detection of the 18S rRNA gene of Plasmodium falciparum based on loop-mediated isothermal amplification (LAMP) and visualization using colorimetric, streptavidin-functionalized gold nanoparticles (SA-GNPs). Two loop primers of LAMP were biotinylated to produce biotin-containing products during amplification. After the addition of SA-GNPs, clusters of avidin-biotin complexes were established in the LAMP structure. While the positive reactions remained wine red, the negative reactions became colorless with partial aggregations induced by hydrochloric acid (HCl) under heat enhancement (60 °C). All steps of the assay were completed within 50 min, its detection limit was 1 parasite/μL, and it was highly specific for P. falciparum. This effortless detection system with high sensitivity and specificity could provide an alternative choice for malaria diagnostics in resource-limited regions.